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A kind of preparation method of high water resistance polyacrylate pressure-sensitive adhesive

A polyacrylate and pressure-sensitive adhesive technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of poor water resistance and low bonding performance, and achieve improved bonding performance and waterproof performance, chemical High stability, the effect of improving stability

Active Publication Date: 2019-12-10
宁波捷傲创益新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a preparation of a polyacrylate pressure-sensitive adhesive with high water resistance in view of the defects that the existing polyacrylate pressure-sensitive adhesive has low bonding performance and poor water resistance. method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Take 800g of soybeans and mash them in a mortar, soak the mashed mixture with absolute ethanol for 2 hours, filter, and separate to obtain the filtrate. In parts by weight, weigh 50 parts of butyl acrylate, 15 parts of hydroxyethyl methacrylate Esters, 35 parts of styrene were placed in a beaker, and stirred for 15 minutes to obtain mixed monomers; in parts by weight, 0.5 parts of filtrate and 90 parts of deionized water were weighed, and the mixture in the beaker was mixed with a rotating speed of 200r / min. Add the mixed monomers dropwise to the flask. After the dropwise addition, continue to stir for 10 minutes to obtain a monomer pre-emulsion; in parts by weight, add 4 parts of filtrate and 40 parts of deionized water to a four-necked flask as the reaction bottom. solution; in parts by weight, take 4.5 parts of ammonium persulfate and dissolve it in 25 parts of deionized water to obtain an initiator solution; move the four-neck flask into a water bath at 80°C, and add...

example 2

[0022] Take 900g of soybeans and mash them in a mortar, soak the mashed mixture with absolute ethanol for 2.5h, filter, separate and obtain the filtrate, and weigh 55 parts of butyl acrylate, 10 parts of methacrylate hydroxy Ethyl ester, 35 parts of styrene were placed in a beaker, and stirred for 20 minutes to obtain mixed monomers; in parts by weight, 0.8 parts of filtrate and 95 parts of deionized water were weighed, and in the stirring state of 250r / min, the The mixed monomers were added dropwise into the flask. After the dropwise addition, the stirring was continued for 15 minutes to obtain a monomer pre-emulsion; in parts by weight, another 4.5 parts of filtrate and 45 parts of deionized water were added to a four-necked flask as a reaction Bottom solution; in parts by weight, take 4.5 parts of ammonium persulfate and dissolve in 28 parts of deionized water to obtain an initiator solution; move the four-necked flask into a water bath at 83°C, add one-tenth of the monomer ...

example 3

[0024] Take 1000g of soybeans and mash them in a mortar, soak the mashed mixture in absolute ethanol for 3 hours, filter, and separate to obtain the filtrate. In parts by weight, weigh 60 parts of butyl acrylate, 20 parts of hydroxyethyl methacrylate Esters, 20 parts of styrene were placed in a beaker, and stirred for 25 minutes to obtain mixed monomers; in parts by weight, 1.0 parts of filtrate and 100 parts of deionized water were weighed, and in a stirring state at a speed of 300r / min, the Add the mixed monomers dropwise into the flask. After the dropwise addition, continue to stir for 20 minutes to obtain a monomer pre-emulsion; in parts by weight, add 5 parts of filtrate and 50 parts of deionized water to a four-necked flask as the reaction bottom. solution; in parts by weight, take 5 parts of ammonium persulfate and dissolve in 30 parts of deionized water to obtain an initiator solution; move the four-necked flask into a water bath at 85°C, and add one-tenth of the monome...

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PUM

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Abstract

The invention discloses a preparation method of polyacrylic ester pressure-sensitive adhesive with high water tolerance, and belongs to the technical field of preparation of pressure-sensitive adhesive materials. Lecithin, which soybean extracting liquid contains, serves as an emulsifying agent, and the lecithin has low surface energy and excellent hydrophobic property and can form a hydrophobic layer on the surface of a latex film, so the water-absorbing rate is obviously reduced along with the increment of the lecithin proportion and the water tolerance of the latex film is improved; a main monomer contains styrene, so that vinyl is introduced into the polymer, crosslinked polymerization can be realized and the stability of the pressure-sensitive adhesive is improved; the lecithin belongs to a non-ionic emulsifying agent and has high chemical stability, the emulsion particles of the pressure-sensitive adhesive synthesized under the condition of the technical scheme of the invention are small, the particle size can be close to nano-scale, the particle size is narrow in distribution, and water molecules difficultly enter the gap among the emulsion particles to be diffused to form water bags, so that the adhesive property and the waterproof property of the pressure-sensitive adhesive are improved and wide application prospect is achieved.

Description

technical field [0001] The invention discloses a preparation method of a polyacrylate pressure-sensitive adhesive with high water resistance, and belongs to the technical field of pressure-sensitive adhesive material preparation. Background technique [0002] With the development of science and technology, people have higher and higher requirements on the performance of pressure-sensitive adhesives, and ordinary pressure-sensitive adhesives can no longer meet people's needs. Adhesives used in the automotive and electronics industries have strict requirements on the adhesion of different substrates, heat resistance, and harsh environments, and the market demand is increasing, prompting companies to work hard to develop high-performance adhesives to meet the needs of this field need. [0003] Polyacrylate emulsion adhesive is a type of pressure-sensitive adhesive that has developed rapidly in recent years, and it is also one of the most widely used pressure-sensitive adhesive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C08F220/18C08F220/28C08F212/08C08F2/30
CPCC08F2/30C08F220/18C08F220/1804C09J133/08C08F220/281C08F212/08
Inventor 王海霞何俊欣林大伟
Owner 宁波捷傲创益新材料有限公司
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